Relevance of Endoxifen Concentrations : Absence of Evidence Is Not Evidence of Absence

Braal, C Louwrens; Beijnen, Jos H; Koolen, Stijn L W; Oomen-de Hoop, Esther; Steeghs, Neeltje; Jager, Agnes; Huitema, Alwin D R; Mathijssen, Ron H J